chore(deps): update dependency openstacksdk to v3.2.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
openstacksdk	== 3.1.0 -> ==3.2.0

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[github-actions]

Test coverage for 4a74f9c

Name                 Stmts   Miss Branch BrPart  Cover   Missing
----------------------------------------------------------------
src/builder.py          79      0     12      0   100%
src/charm.py            73      0      8      0   100%
src/charm_utils.py      24      0      2      0   100%
src/exceptions.py        8      0      0      0   100%
src/image.py            27      0      4      0   100%
src/proxy.py            21      0      4      0   100%
src/state.py           168      0     26      0   100%
----------------------------------------------------------------
TOTAL                  400      0     56      0   100%

Static code analysis report

Run started:2024-07-10 06:25:50.258665

Test results:
  No issues identified.

Code scanned:
  Total lines of code: 2932
  Total lines skipped (#nosec): 2
  Total potential issues skipped due to specifically being disabled (e.g., #nosec BXXX): 13

Run metrics:
  Total issues (by severity):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
  Total issues (by confidence):
  	Undefined: 0
  	Low: 0
  	Medium: 0
  	High: 0
Files skipped (0):